How many pregnant women got the shot, how many had miscarriages, what is the normal rate for miscarriages during that time and are there any other factors which may change that rate such as women in ill health being more or less likely to get the vaccination? Whipping up numbers like a 550% increase (from 4 to 26) without the raw numbers is panic mongering.
Might there be a problem with vaccinating pregnant women? Maybe, but this article doesn't answer that.